A method includes identifying a peak interval traffic intensity for visual voicemail (VVM) services in a network. The method includes identifying a. plurality of user devices available for implementing scalability testing. A number of requests for VVM services during a prospective time for scalability testing in the network is also identified. The method includes determining a number of additional requests for VVM services from the plurality of user devices that approximates the peak interval traffic intensity during the prospective time for scalability testing in the network. The method also includes determining instructions for at least one of the plurality of user devices to provide the determined number of additional requests. The determined instructions are sent to the at least one of the plurality of user devices.